11、 中国海(西北)China Sea. Sheet III (North West), Cam Ranh Bay to Hong Kong London : Published at the Admiralty under the Superintendemce of Capt. Washington R.N.F.R.S. Hydrographer : Sold by J.D. Potter, Agent for the Admiralty Charts 31 Poultry and 11 King Street Tower Hill
Great Britain. Hydrographic Department著
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19、 香港地图Hong Kong [Washington D.C.] : Geological Survey, 1946
United States. Army Map Service著
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